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Patents Granted on 1812-03-27
Patents 1 - 3 of 3
First set of recordsLast set of records
1,689XMar. 27, 1812D. ShoemakerFire extinguisher and chimney regulatorfire extinguishers
1,690XMar. 27, 1812M. BattleSteam engine propelled by polessteam engines
1,691XMar. 27, 1812R.W. AdamsWooden still and condensing box
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